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왕수분해와 결합한 자동분석법의 토양 중 불소시험 유효성 연구
나경호,윤인철,이정복,Na, Kyung-Ho,Yun, In-Chul,Lee, Jung-Bok 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.5
The purpose of this research is to check the validation of an auto-analysis method combined with aqua regia digestion apparatus for improvement of water distillation method used as a fluorine test of soil. Fluorine contents of CaO used in the pretreatment course of water distillation method were 120 mg/kg ~ 5,064 mg/kg at the blank test, which was exceeded up to maximum 12.5 times of the soil standard, so it was estimated due to a effect of fluorine existing as impurities of CaO. The recovery test of the same samples indicated that water distillation method and auto-analysis method were 134.5mg/kg and 161.7mg/kg respectively, the recovery ratio of the latter was 16.8% higher than the formal. The validation test of two methods satisfied the standard, but auto analysis method was excellent more than distillation method. Also, auto analysis method could save a analysis time up to maximum 4.7 times by comparison with water distillation method.
COVID-19 전후 성인의 소득수준별 식 행동 및 식사의 질 비교: 국민건강영양조사 제8기(2019-2020년) 자료 활용
나혜민,정복미 한국지역사회생활과학회 2022 한국지역사회생활과학회지 Vol.33 No.3
This study compares changes in the dietary behavior and diet quality of adults by considering the household income in 2019 before the COVID-19 pandemic and 2020 after the COVID-19 pandemic, using data from the National Health and Nutrition Examination Survey. The frequency of eating out decreased in all groups except for the group with high household income. In the low household income group, the sugar intake was reduced, whereas the average intake of thiamine below the required level was increased with a decreased NAR of thiamine. In the mid-low income group, the potassium intake was increased, whereas the intake of riboflavin below the required average decreased, thereby obtaining increased NAR and INQ of riboflavin. In the mid-high income group, carbohydrate and sugar intakes decreased, mono-unsaturated fatty acid intake increased, protein intake was below the average required amount, NAR of vitamin C decreased, and INQ of riboflavin increased. In the high household income group, the intake of sugar, thiamine, iron, and folic acid decreased, whereas the intake rate of iron, thiamine, and vitamin C below the average requirement increased. In addition, the NAR and MAR of thiamine, niacin, vitamin C, and iron, and the INQ of thiamine were decreased, whereas the INQ of riboflavin increased. This study presents the changing patterns in eating behaviors based on the household income before and after COVID-19. Considering the results of this study, it is necessary to impart education on proper nutrition management for Korean adults by selecting the nutritionally vulnerable groups based on their income level. Moreover, customized nutrition policies and support programs in preparation for the post-corona era need to be developed.